Aspects of the disclosure provide methods and apparatuses for video coding. In some examples, an apparatus includes processing circuitry that stores reconstructed samples of a reconstructed block in a memory. When a current sub-block in a current block is to be reconstructed using intra block copy (IBC) based on a reference sub-block in the reconstructed block, the processing circuitry determines whether the reconstructed samples of the reference sub-block stored in the memory are indicated as overwritten based on a position of the current sub-block, generates reconstructed samples of the current sub-block based on the reconstructed samples of the reference sub-block when the reconstructed samples of the reference sub-block stored in the memory are determined to be indicated as not overwritten, and overwrites the reconstructed samples of a collocated sub-block in the reconstructed block stored in the memory with the generated reconstructed samples of the current sub-block.
Legal claims defining the scope of protection, as filed with the USPTO.
3. The method of claim 2, wherein the determining whether the reference sub-block is valid comprises determining that the reference sub-block is not valid in a case that the reference sub-block at least partially overlaps another partition of the previously reconstructed block that is arranged prior to the collocated partition according to a coding order of partitions of the current block.
13. The apparatus of claim 12, wherein the processing circuitry is further configured to determine that the reference sub-block is not valid in a case that the reference sub-block at least partially overlaps another partition of the previously reconstructed block that is arranged prior to the collocated partition according to a coding order of partitions of the current block.
18. The non-transitory computer-readable medium of claim 17, wherein the determining whether the reference sub-block is valid comprises determining that the reference sub-block is not valid in a case that the reference sub-block at least partially overlaps another partition of the previously reconstructed block that is arranged prior to the collocated partition according to a coding order of partitions of the current block.
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October 21, 2020
November 29, 2022
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